31461

Appears in sequences

• G.f. A(x) satisfies: A(x)^2 equals the g.f. of A110649, which consists entirely of numbers 1 through 12.at n=13A112574
• Number of (n+1) X (n+1) 0..4 arrays with each 2 X 2 subblock off diagonal and antidiagonal nonsingular and the array of 2 X 2 subblock determinants antisymmetric about the diagonal and antidiagonal.at n=1A187703
• T(n,k)=Number of (n+1)X(n+1) 0..k arrays with each 2X2 subblock off diagonal and antidiagonal nonsingular and the array of 2X2 subblock determinants antisymmetric about the diagonal and antidiagonal.at n=11A187705
• Number of 3X3 0..n arrays with each 2X2 subblock off diagonal and antidiagonal nonsingular and the array of 2X2 subblock determinants antisymmetric about the diagonal and antidiagonal.at n=3A187706
• Numbers k for which there are no prime numbers in the range (k-4*sqrt(sqrt(k)), k].at n=25A192320
• Number of zero-sum -n..n arrays of 5 elements with adjacent element differences also in -n..n.at n=9A202255
• Numbers k such that (16*10^k + 161)/3 is prime.at n=28A273265
• Expansion of the series reversion of x/(1 + x^2/(1 + x^3/(1 + x^4/(1 + x^5/(1 + ...))))), a continued fraction.at n=18A291377
• Numerators of convergents to continued fraction expansion of tribonacci constant (A058265, A019712).at n=4A319428
• Starts of runs of 3 consecutive numbers with the same total binary weight of their divisors (A093653).at n=17A338453