44488

Appears in sequences

• Numbers with digits nondecreasing and their reciprocals sum to 1/(positive integer).at n=32A045910
• Beginning of first run of at least n consecutive happy numbers.at n=4A055629
• Numbers such that harmonic mean of digits is 5.at n=29A062183
• First of triples of consecutive happy numbers, i.e., the first of three consecutive integers each of which is a happy number (A007770).at n=36A072494
• Numbers with digits in nondecreasing order such that sum of the reciprocals of the digits is 1.at n=15A091783
• Numbers n with digits in nondecreasing order such that sum of the reciprocal of digits is an integer.at n=38A091784
• Number of n X n arrays of squares of integers summing to 31 with every element equal to at least one neighbor.at n=2A146546
• First of quadruples of consecutive happy numbers.at n=5A194352
• First of quintuples of consecutive happy numbers.at n=0A194355
• Numbers with digits 4 and 8 only.at n=33A284972
• Number of solutions to x^2 + y^2 + z^2 + w^2 <= n^2, where x, y, z, w are positive odd integers.at n=39A349611
• a(n) is the numerator of x(n) = (2*x(n-1) + 1/n) mod 1, with x(0) = 0.at n=15A374332
• E.g.f. satisfies A(x) = ( 1 - log(1 - x*A(x)) )^2.at n=5A377360