23141

Appears in sequences

• a(n) = A078152(2^n).at n=26A078157
• Number of partitions p of n such that (sum of parts with multiplicity 1) < (sum of all other parts).at n=41A240448
• Number of partitions p of n such that (sum of parts with multiplicity 1) <= (sum of all other parts).at n=41A240449
• Expansion of psi(x^4) / chi(-x)^2 in powers of x where psi(), chi() are Ramanujan theta functions.at n=30A260599
• Numbers k such that (76*10^k - 211)/9 is prime.at n=20A293189
• a(n) = Sum_{k=1..n} floor(n/k)^3.at n=26A318742
• Expansion of e.g.f. exp(x) * Product_{k>=1} (1 + x^k/k!).at n=9A320567
• Composite hypotenuses of primitive Pythagorean triangles (A120961) that are not circumdiameters of non-Pythagorean primitive Heronian triangles (A285579).at n=33A329148
• Number of interior vertices formed by drawing the lines connecting any two of the 2*(n+2) perimeter points of a 3 X (n+1) square grid.at n=17A331767
• Expansion of e.g.f. exp(x*G(x)^2) where G(x) = 1 + x*G(x)^3 is the g.f. of A001764.at n=5A380511