112948

Appears in sequences

• Numbers n such that the sum of the pentagonal numbers P(n) and P(n+1) is equal to the heptagonal number H(m) for some m.at n=3A252585
• Symmetric difference of the primitive non-deficient numbers and the primitive Zumkeller numbers.at n=39A378538
• Numbers that are primitive Zumkeller, but not primitive non-deficient.at n=29A378657