20770

Appears in sequences

• Let p(n, s, x) be predicate that number of occurrences of s's in x >= 2*n - the length of the longest sequence of s's in x. Then a(n)=#{x in {0,1}* | x ends in 0 and p(n,0,x) and (there is no prefix y of x such that p(n,0,y) or p(n,1,y))}.at n=5A000530
• Centered 23-gonal numbers.at n=42A069174
• Self-convolution of sequence A001402.at n=21A160647
• Those terms of A255571 whose every A080541/A080542-rotation is also a term of A255571.at n=37A258001
• Consecutive states of the linear congruential pseudo-random number generator (419*s + 6173) mod 29282 when started at s=1.at n=17A385036