71663616

Appears in sequences

• Denominator of sum of -8th powers of divisors of n.at n=11A017680
• Sixth column of triangle A067425.at n=6A067426
• 3 people at a party are saying Hello to each other. Person 1 says Hello. Person 2 counts the times Hello has been said and says Hello twice that number. Person 3 says Hello 3 times the sum of Hello's and then it is Person 1 again. This is how many Hello's each person says.at n=17A076505
• a(n) = (a(n-1) * a(n-6) + a(n-3) * a(n-4)) / a(n-7) (a variant of Somos-7).at n=24A078495
• Smallest number beginning with 7 and having exactly n prime divisors counted with multiplicity.at n=21A106427
• Mix A001021, 2*A001021.at n=15A176710
• a(n) = floor(sqrt(n)) * a(n-1), starting with 1.at n=19A195458
• a(n) = Product_{d|n} Product_{d_x|n , d_x <= d} d_x.at n=11A220849
• T(n,k)=Number of nXk arrays of permutations of 0..n*k-1 with rows nondecreasing modulo 2 and columns nondecreasing modulo 4.at n=24A264638
• Number of n X 1 arrays of permutations of 0..n*1-1 with rows nondecreasing modulo 2 and columns nondecreasing modulo 7.at n=24A264791
• Denominators of poly-Bernoulli numbers B_n^(k) with k = 8.at n=3A283933
• Numbers where A349258 reaches a record value.at n=17A349259
• a(n) is the least number k such that A349258(k) = n.at n=22A349260
• Numbers of multiplicative persistence 5 which are themselves the product of digits of a number.at n=18A350184
• a(n) = [x^n] x/(12*x^2 - 6*x + 1).at n=15A379825