191890

Appears in sequences

• This table shows the coefficients of combinatorial formulas needed for generating the sequential sums of p-th powers of binomial coefficients C(n,5). The p-th row (p>=1) contains a(i,p) for i=1 to 5*p-4, where a(i,p) satisfies Sum_{i=1..n} C(i+4,5)^p = 6 * C(n+5,6) * Sum_{i=1..5*p-4} a(i,p) * C(n-1,i-1)/(i+5).at n=36A087109
• Triangular numbers whose digit reversal is a brilliant number (A078972).at n=14A115678
• Hexagonal numbers for which both the sum of the digits and the product of the digits are also hexagonal numbers.at n=24A117064
• Triangular numbers which are sums of 4 consecutive primes.at n=16A173420
• Sequence of distinct least triangular numbers such that the arithmetic mean of the first n terms is also a triangular number. Initial term is 0.at n=15A236415
• Triangular numbers n such that each decimal digit of n is equal to the difference of at least two other digits of n.at n=20A255917