23110

Appears in sequences

• n written efficiently in natural numbers base, i.e., in form ...wxyz where n =1*z + 2*y + 3*x + 4*w + ... with z < 1, y < 2, x < 3, w < 4, ...at n=25A055992
• Sequence A014486 shown in base 4.at n=31A085185
• Triangle, read by rows, where the n-th row lists the coefficients of the polynomial of degree n, with root -1, that generates the n-th diagonal of this sequence.at n=59A091173
• Number of multiplex juggling sequences of length n, base state <2,1> and hand capacity 2.at n=6A136777
• Number of (w,x,y,z) with all terms in {1,...,n} and 3w<x+y+z+n.at n=13A212249
• Numbers k such that sum of divisors of k is a square and a triangular number (A000217). That is, numbers k such that A000203(k) is in A001110.at n=4A232847
• Numbers n such that n!3 - 3^7 is prime, where n!3 = n!!! is a triple factorial number (A007661).at n=30A267382
• Number of nX3 0..1 arrays with every element equal to 0, 1, 2, 4, 5, 6 or 8 king-move adjacent elements, with upper left element zero.at n=9A299801
• Numbers k such that k^2 + {1,3,7,13} are prime.at n=7A356109
• Indices of records in A360519.at n=51A361108
• Number of k <= P(n) such that gcd(k,P(n)) > 1, yet there is a prime q | k that does not divide P(n), where P(n) = A002110(n).at n=6A363844