113050

Appears in sequences

• Smallest triangular number that contains the string n in its exact center.at n=30A062690
• Triangular numbers containing 2k digits in which the sum of the first k digits = that of the rest.at n=9A068898
• Triangular numbers whose sum of squared digits is also triangular.at n=27A094890
• Triangular numbers whose digit reversal is prime; trailing zeros are permitted.at n=31A115704
• Numbers such that the digital sums in bases 2, 3, 5 and 10 all are equal.at n=30A135128
• Triangle read by rows: T(n, k) = Sum_{j=0..k} (-1)^j*binomial(n, j)*(k + 1 - j)^(n - 1).at n=24A162498
• The smallest triangular number that contains the digits of n in its exact middle.at n=29A163598
• Triangular numbers that are the product of two triangular numbers greater than 1.at n=29A188630
• Smallest number with middle divisors whose distance to the next number with middle divisors is n.at n=21A280295
• Numbers that have exactly 7 representations as a k-gonal number, P(n,k) = n*((k-2)*n - (k-4))/2, k and n >= 3.at n=21A321157