116928

Appears in sequences

• Expansion of theta series of E_7 lattice in powers of q^2.at n=15A004008
• T(2n,n-3), T given by A026747.at n=6A026860
• Theta series of 8-d 6-modular lattice G_2 tensor F_4 (or A_2 tensor D_4) with det 1296 and minimal norm 4 in powers of q^2.at n=29A028977
• Nonzero coefficients in theta series of {E_7}* lattice.at n=30A030443
• a(n) = (n+1)(n+2)^3*(n+3)^2*(n+4)(5n^2 + 23n + 30)/8640.at n=6A107966
• Subset of A020342 (vampire numbers, definition 1) listing numbers which have more than one such representation of the desired form.at n=25A144563
• a(n) = 361*n^2 - 2*n.at n=17A158307
• Numbers with prime factorization pqr^2s^6.at n=26A190474
• Triangle read by rows, n>=0, k>=0, T(0,0) = 1, T(n,k) = Sum_{j=0..k} (C(n+k,k-j)*(-1)^(k-j)*2^(n-j)*Sum_{i=0..j} (C(n+j,i)*|S(n+j-i,j-i)|)), S = Stirling number of first kind.at n=23A201636
• Number n such that Fibonacci(n) is divisible by n, n + 1 and n - 1.at n=19A221018
• Consider numbers n = concat(w,x,y,z) such that w*x*y*z | n. Leading zeros in x, y and z allowed. Sequence lists numbers that admit at least two such concatenations.at n=22A257172
• a(n) = Sum_{k=1..n} k^2*sigma(k), where sigma is A000203.at n=22A319086
• Numbers k such that phi(k) + uphi(k) = k, where phi is the Euler totient function (A000010) and uphi is the unitary totient function (A047994).at n=8A329729