72105

Appears in sequences

• a(n) = (4*n+7)(!^4)/7(!^4), related to A034176(n+1) ((4*n+3)(!^4) quartic, or 4-factorials).at n=4A051619
• Numbers with exactly one arithmetic progression of four successive divisors (not necessarily consecutive).at n=35A094530
• The z^2 coefficients of the polynomials in the GF1 denominators of A156921.at n=8A157706
• T(n,m) = Number of ways to partition an nXm grid into 3 connected equal-area regions.at n=69A167259
• Products of 5 distinct primes a,b,c,d,e, such that a+b+c+d+e are prime numbers.at n=12A178782
• a(n) = lcm(n, n+1, n+2, n+3, n+4, n+5, n+6, n+7)/840.at n=18A188897
• Numbers other than prime powers divisible by the sum of the squares of their prime divisors.at n=1A190882
• Numbers of espalier polycubes of a given volume in dimension 4.at n=32A229917
• Squared length of sum of e_lambda e_lambda', where e_lambda is an elementary symmetric function and lambda ranges over all partitions of n and lambda' is the adjoint (or transpose) of lambda.at n=35A332302
• Composite squarefree numbers k = Product_{i} p_i such that k^2 is divisible by Sum_{i} p_i^2.at n=4A332738
• Number of integer partitions of n with reverse-alternating sum < 0.at n=48A344608
• Number of integer partitions of 2n with reverse-alternating sum < 0.at n=24A344743