36046

Appears in sequences

• Row sums of unsigned triangle A062140 (generalized a=4 Laguerre).at n=5A062266
• Triangular numbers whose reverse is prime.at n=14A066751
• Triangular numbers whose digit permutations yield at least two further triangular numbers.at n=21A069674
• Triangular number x such that x + reverse of x is a prime.at n=12A072387
• Lower triangular matrix, read by rows: T(i,j) = number of ways i seats can be occupied by any number k (0<=k<=j<=i) of persons.at n=40A086885
• Triangular numbers whose digit reversal is prime; trailing zeros are permitted.at n=20A115704
• a(n) is the number of ways 2n-1 seats can be occupied by at most n people for n>=1, with a(0)=1.at n=5A152059
• Cyclops triangular numbers.at n=10A160717
• The positions of zeros in A163898 and A163899.at n=39A165403
• Smallest triangular number with exactly n anagrams that are triangular numbers.at n=3A166596
• Triangle read by rows: Sum_{j=0..k} binomial(n, j)*binomial(k, j)*j!.at n=50A176120
• Primitive numbers in A229307.at n=28A229311
• Triangular numbers T such that sum of the factorials of digits of T is prime.at n=22A242831
• Numbers m such that m - 3 divides m^m + 3.at n=22A252041
• Numbers n with the property that the symmetric representation of sigma(n) has four parts, each of width one and two regions meet at the center of the Dyck path.at n=18A264104
• Numbers k such that there is no prime p and index j < k such that A002182(k) = p * A002182(j).at n=17A272606
• Triangular numbers that in base 2 have the same number of 0's and 1's.at n=19A345348
• Triangular numbers such that the sum of cubes of their digits is prime.at n=19A345351
• Smallest number m in a set of at least three consecutive triangular numbers with three distinct prime factors.at n=18A349539