239190

Appears in sequences

• Denominators of continued fraction convergents to sqrt(274).at n=13A041515
• E.g.f.: (1-x^4)^(-1/2)*exp(x^2/(1-x^2))*BesselI(0,x^2/(x^2-1)) (since this is an even function, we do not give the intercalating 0's).at n=4A123686
• a(n) = n*(n + 11)*(n + 22)*(n + 33)/24.at n=34A264448
• Numbers n such that A003144(n) = floor(alpha*n) + 1, where alpha = 1.839... is the positive real zero of x^3-x^2-x-1.at n=38A275158
• a(n) = k if the first appearance of n in A077618 is at index k, or 0 if k does not appear in A077618.at n=42A291056
• Number of length-n ternary words containing no even palindromes of length > 0 and no odd palindromes of length > 3.at n=28A330132
• Products of 6 distinct primes that are sandwiched between semiprime numbers.at n=29A378627