22601

Appears in sequences

• a(0) = 1, a(n) = 31*n^2 + 2 for n>0.at n=27A010020
• Denominators of continued fraction convergents to sqrt(922).at n=10A042783
• a(n) is the number of free 'polyominoes' on the (4.8.8) grid with n octagons and n squares.at n=4A057707
• Number of subsets of {1, ..., n} with no four terms in arithmetic progression.at n=16A066369
• Times in hours, minutes and seconds (to the nearest second) at which the hour and minute hands of an analog clock, if interchanged, continue to indicate some other albeit accurate times, over a complete 12-hour sweep for the slower hand. Leading zeros omitted.at n=29A121577
• Number of strings of numbers x(i=1..5) in 0..n with sum i^3*x(i) equal to 125*n.at n=39A184260
• Numbers of triples {x, y, z} such that z >= y > 1 and prime(x) + prime(y) * prime(z) = 2^n.at n=20A225536
• Number of (n+2)X(2+2) 0..1 arrays with no 3x3 subblock diagonal sum 1 and no antidiagonal sum 2 and no row sum 0 and no column sum 0.at n=6A255085
• Number of (n+2)X(7+2) 0..1 arrays with no 3x3 subblock diagonal sum 1 and no antidiagonal sum 2 and no row sum 0 and no column sum 0.at n=1A255090
• T(n,k)=Number of (n+2)X(k+2) 0..1 arrays with no 3x3 subblock diagonal sum 1 and no antidiagonal sum 2 and no row sum 0 and no column sum 0.at n=29A255091
• T(n,k)=Number of (n+2)X(k+2) 0..1 arrays with no 3x3 subblock diagonal sum 1 and no antidiagonal sum 2 and no row sum 0 and no column sum 0.at n=34A255091
• Partial sums of A080715.at n=36A268403
• Triangle read by rows: T(n,k) is the number of bargraphs of semiperimeter n having k valleys of width 1 (i.e., DHU configurations, where U=(0,1), H=(1,0), D=(0,-1)), (n>=2, k>=0).at n=24A273721
• Composite hypotenuses of primitive Pythagorean triangles (A120961) that are not circumdiameters of non-Pythagorean primitive Heronian triangles (A285579).at n=32A329148
• Expansion of Sum_{k>0} x^k / (1 - (k * x)^k)^(k+1).at n=9A360795