30876

Appears in sequences

• 4-dimensional centered tetrahedral numbers.at n=19A008498
• McKay-Thompson series of class 36A for Monster.at n=49A058644
• McKay-Thompson series of class 36D for the Monster simple group.at n=49A058647
• a(n) = 49*(n*(n+1)/2) + 6.at n=35A061792
• Expansion of chi(-q^3) / chi^3(-q) in powers of q where chi() is a Ramanujan theta function.at n=24A128128
• Expansion of f(q, q^2) * f(-q^3) / f(-q^2)^2 in powers of q where f(, ), f() are Ramanujan theta functions.at n=48A132180
• Expansion of chi(q)^3 / chi(q^3) in powers of q where chi() is a Ramanujan theta function.at n=48A132972
• Expansion of (phi(-q^3) / phi(-q))^2 in powers of q where phi is a Ramanujan theta function.at n=16A186924
• Coefficient of x in the reduction by x^2 -> x+1 of the polynomial p(n,x) defined at Comments.at n=18A192982
• Triangular numbers such that the binary representation is of the form either Tbt or Tt, where T and t are binary representations of triangular numbers with equal binary length, and b is a binary digit: b = 1 or 0.at n=9A226736
• McKay-Thompson series of class 36A for the Monster group with a(0) = 2.at n=49A227585
• Expansion of phi(q) * phi(q^9) / phi(q^3)^2 in powers of q where phi() is a Ramanujan theta function.at n=48A233673
• Triangular numbers which have one or more occurrences of exactly five different digits.at n=20A241788
• Number of length n+6 0..2 arrays with no seven consecutive terms having four times the sum of any three elements equal to three times the sum of the remaining four.at n=3A249191
• T(n,k)=Number of length n+6 0..k arrays with no seven consecutive terms having four times the sum of any three elements equal to three times the sum of the remaining four.at n=13A249197
• Number of length 4+6 0..n arrays with no seven consecutive terms having four times the sum of any three elements equal to three times the sum of the remaining four.at n=1A249201
• T(n,k)=Number of length n+6 0..k arrays with no seven consecutive terms having five times the sum of any two elements equal to two times the sum of the remaining five.at n=13A249212
• Number of length 4+6 0..n arrays with no seven consecutive terms having five times the sum of any two elements equal to two times the sum of the remaining five.at n=1A249216
• T(n,k)=Number of length n+6 0..k arrays with no seven consecutive terms having six times any element equal to the sum of the remaining six.at n=13A249319
• Number of length 4+6 0..n arrays with no seven consecutive terms having six times any element equal to the sum of the remaining six.at n=1A249323