36315

Appears in sequences

• a(n) = floor(e^((n-1)/2)).at n=22A005182
• Odd triangular numbers with prime indices.at n=26A034954
• Numbers k such that k | 12^k + 11^k + 1.at n=38A057293
• a(n) = 49*(n*(n+1)/2) + 6.at n=38A061792
• Triangular numbers which are a concatenation of two or more positive triangular numbers.at n=36A068144
• Odd numbers k such that the palindromic wing number (a.k.a. near-repdigit palindrome) 7*(10^k - 1)/9 - 2*10^((k-1)/2) is prime.at n=12A077785
• Triangular numbers for which the sum of the digits is a heptagonal number.at n=32A117312
• Hexagonal numbers (A000384) which are sum of 2 other hexagonal numbers > 0.at n=28A133215
• a(n) = 3^(-1+floor(n/2))*A(n), where A(n) = 3*A(n-1) + A(n-2) - A(n-3)/3 with A(0)=A(1)=3, A(2)=11.at n=7A217336
• a(n) = floor(e^(n + 1/2)).at n=10A219092
• Triangular numbers which become primes when their rightmost digit is removed.at n=33A227936
• Triangular numbers T such that sum of the factorials of digits of T is prime.at n=23A242831
• Smallest number m in a set of at least three consecutive triangular numbers with three distinct prime factors.at n=19A349539