130977

Appears in sequences

• Part of n! composed of prime factors of form 4k+3.at n=13A097707
• Number of permutations of n elements divided by the number of (binary) heaps on n+1 elements.at n=18A133385
• a(n) = 4*n^3 - 3*n + 1.at n=32A280089
• Irregular triangle read by rows: T(n,k) is the number of compositions of 2^n into k powers of 2.at n=41A323840