31770

Appears in sequences

• a(0) = 1, a(n) = 22*n^2 + 2 for n>0.at n=38A010012
• Number of ways to partition a 2-colored labeled set into identical subsets.at n=9A038042
• Shiraishi numbers: a parametrized family of solutions c to the Diophantine equation a^3 + b^3 + c^3 = d^3 with d = c+1.at n=29A226903
• Numbers k such that k+1, 2k+1, 3k+1, 4k+1 are all prime.at n=12A237189
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 841", based on the 5-celled von Neumann neighborhood.at n=30A273685
• A digitized pure tuning tone, sampled at standard settings for consumer audio: a(n) = floor(sin(2*Pi*(440/44100)*n)*32767).at n=29A320277
• Number T(n,k) of colored set partitions of [n] where elements of subsets have distinct colors and exactly k colors are used; triangle T(n,k), n>=0, 0<=k<=n, read by rows.at n=24A323128
• Number of colored set partitions of [2n] where elements of subsets have distinct colors and exactly n colors are used.at n=3A324523