Even, nonzero decagonal pyramidal numbers.

Terms

a(0) =38a(1) =90a(2) =476a(3) =708a(4) =1826a(5) =2366a(6) =4600a(7) =5576a(8) =9310a(9) =10850a(10) =16468a(11) =18700a(12) =26586a(13) =29638a(14) =40176a(15) =44176a(16) =57750a(17) =62826a(18) =79820a(19) =86100a(20) =106898a(21) =114510a(22) =139496a(23) =148568a(24) =178126a(25) =188786a(26) =223300a(27) =235676a(28) =275530a(29) =289750