228826

Appears in sequences

• a(n) = n^2*(n^2 + 1)/2.at n=26A037270
• Numbers k that divide 9^k + 7^k.at n=36A045605
• a(n) = sum of the first n coefficients of (1+x+x^2)^n.at n=11A055217
• Sum of next n numbers/n if n divides the sum else n times the sum of next n numbers.at n=25A094260
• Triangular numbers with only even digits.at n=19A117978
• Triangular numbers composed of digits {2,6,8}.at n=5A119174
• a(n) = sum of numbers from 1 to pi(n), where pi(n) = A007955(n).at n=25A184390
• Number of 0..2 arrays of length n+11 with sum less than 12 in any length 12 subsequence (=less than 50% duty cycle).at n=0A212727
• T(n,k)=Number of 0..2 arrays of length n+2*k-1 with sum less than 2*k in any length 2k subsequence (=less than 50% duty cycle).at n=15A212729
• Number of 0..2 arrays of length 2*n with sum less than 2*n in any length 2n subsequence (=less than 50% duty cycle).at n=5A212730
• Number of length n+3 0..6 arrays with no consecutive four elements summing to more than 2*6.at n=3A241962
• T(n,k)=Number of length n+3 0..k arrays with no consecutive four elements summing to more than 2*k.at n=39A241964
• Number of length 4+3 0..n arrays with no consecutive four elements summing to more than 2*n.at n=5A241967
• Triangular numbers that are sum of squares of two distinct triangular numbers.at n=32A346386