137984

Appears in sequences

• G.f. = { 1+sum(4*n*q^n, n=1..infinity)} / { theta series for square lattice }.at n=24A079902
• Non-palindromic numbers n such that the square root of n multiplied by the reversal of n is a palindrome.at n=17A258382
• Sixth pi-based arithmetic derivative of n.at n=48A258856
• Number of length n arrays of permutations of 0..n-1 with each element moved by -4 to 4 places and with no two consecutive decreases.at n=10A263679
• a(n) = n*(n^2 - 3*n + 10)*2^(n-4).at n=11A383778