36993

Appears in sequences

• Alkane (or paraffin) numbers l(7,n).at n=34A005994
• Take pairs (x,y) with Sum_{j = x..y} j = concatenation of x and y. Sort pairs on y then x. This sequence gives x of each pair.at n=28A070152
• a(n) = n*(n+1)*(2*n^2+1)/6.at n=18A071238
• Odd numbers k such that the number of 1's in binary representation of k equals omega(k), the number of distinct primes in the factorization of k.at n=38A071595
• Diagonal in array of n-gonal numbers A081422.at n=32A081437
• Number of pairs with two different elements which can be obtained by selecting unique elements from two sets with n+1 and n^2 elements respectively and n common elements.at n=33A085490
• a(n)*a(n-9) = a(n-1)*a(n-8)+a(n-4)+a(n-5) with initial terms a(1)=...=a(9)=1.at n=28A133847
• a(n) = 32*n^2 + 1.at n=34A158575
• a(n)=least number that is cyclops for exactly n distinct bases b > 1.at n=10A285987
• a(n) is the n-th order Taylor polynomial (centered at 0) of S(x)^(3*n) evaluated at x = 1, where S(x) = (1 - x - sqrt(1 - 6*x + x^2))/(2*x) is the o.g.f. of the Schröder numbers A006318.at n=4A333092
• Indices k such that the determinant of the 3 X 3 Hankel matrix of consecutive primes starting at prime(k) is 0.at n=32A392523