33778

Appears in sequences

• Numbers k such that the continued fraction for sqrt(k) has odd period and if the last term of the periodic part is deleted the two central terms are both 21.at n=12A031609
• Number of binary [ n,4 ] codes of dimension <= 4 without zero columns.at n=17A034338
• Number of primitive (period n) step cyclic shifted sequence structures using a maximum of two different symbols.at n=24A056439
• Number of primitive (period n) step cyclic shifted sequence structures using exactly two different symbols.at n=24A056444
• Integer part of (Product(n^((1 + log(1 + i))/i^2), {i, 1, n})).at n=25A062486
• Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 0), (-1, 1, -1), (0, 0, 1), (0, 1, -1), (1, 0, 0)}.at n=9A149929
• Number of (n+2) X (2+2) 0..1 arrays with every 3 X 3 subblock sum of the two sums of the central row and central column minus the two minimums of the diagonal and antidiagonal nondecreasing horizontally, vertically and ne-to-sw antidiagonally.at n=2A255030
• T(n,k)=Number of (n+2)X(k+2) 0..1 arrays with every 3X3 subblock sum of the two sums of the central row and central column minus the two minimums of the diagonal and antidiagonal nondecreasing horizontally, vertically and ne-to-sw antidiagonally.at n=8A255036
• Number of (3+2)X(n+2) 0..1 arrays with every 3X3 subblock sum of the two sums of the central row and central column minus the two minimums of the diagonal and antidiagonal nondecreasing horizontally, vertically and ne-to-sw antidiagonally.at n=1A255038